/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-alt: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 16px;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.nav.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    min-height: 44px;
    min-width: 44px;
    justify-content: center;
    align-items: center;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    transition: var(--transition);
}

/* Mobile Menu Backdrop */
.nav-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-backdrop.active {
    display: block;
    opacity: 1;
}

/* Hero Section */
.hero {
    padding: 6rem 0 6rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
    margin-top: 60px;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-name {
    display: block;
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
    animation: fadeInUp 0.6s ease backwards;
}

.hero-subtitle-text {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

/* Legacy support for h2.hero-subtitle */
.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: clamp(0.8rem, 1.5vw, 0.875rem);
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    min-height: 44px;
    min-width: 44px;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Section Styles */
.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 3rem;
    text-align: center;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 2rem;
}

.highlight {
    padding: 2rem;
    background-color: var(--bg-primary);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.highlight:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.highlight h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.highlight p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 2rem;
}

.skill-category {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.skill-category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.skill-tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Technology Selector */
.filter-section {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin-bottom: 3rem;
}

.filter-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.filter-tag {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    padding: 0.625rem 1.25rem;
    min-height: 44px;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.filter-tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.filter-tag.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Export Controls */
.export-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    min-height: 44px;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Project Selection Checkbox - Hidden */
.project-selection {
    display: none;
}

.project-checkbox {
    display: none;
}

/* Project Card Selection State */
.project-card.selected {
    border: 4px solid #10b981 !important;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%) !important;
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.4) !important;
    transform: translateY(-3px) !important;
}

.project-card.selected:hover {
    border: 4px solid #059669 !important;
    box-shadow: 0 16px 50px rgba(16, 185, 129, 0.5) !important;
}

.project-card.highlighted {
    cursor: pointer;
}

.project-card.highlighted:active {
    transform: scale(0.98);
}

/* Projects Grid - 3 columns on desktop */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 1.5rem;
    margin: 0 auto;
}

.project-card {
    background-color: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
    border: 3px solid transparent;
    display: none;
}

.project-card.highlighted {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 100%);
    border: 3px solid var(--primary-color);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
    animation: fadeInScale 0.4s ease;
}

.project-card.highlighted:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.25);
    border-color: var(--primary-dark);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    gap: 1rem;
}

.project-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    font-weight: 600;
    line-height: 1.3;
    flex: 1;
}

.project-duration {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    padding: 0.35rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.project-company {
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    margin-top: 0.5rem;
}

.project-role {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.75rem;
    font-style: italic;
}

.project-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-details {
    margin-top: 1rem;
    padding-top: 0;
}

.project-details h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-details ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0.875rem;
}

.project-details li {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    padding-left: 1.125rem;
    position: relative;
}

.project-details li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.project-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.875rem;
}

.tech-tag {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    border-radius: 0.3rem;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

.tech-tag:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Industry Tag */
.industry-tag {
    display: inline-block;
    padding: 0.4rem 0.85rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 1.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* Education Section */
.education-grid {
    max-width: 700px;
    margin: 0 auto 3rem;
}

.education-item {
    background-color: var(--bg-primary);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

.education-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.education-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.education-item h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.education-school {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.education-date {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Certifications */
.certifications {
    max-width: 100%;
    margin: 0 auto;
}

.certifications-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
}

.cert-category {
    margin-bottom: 3rem;
}

.cert-category-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--primary-color);
}

.certification-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    gap: 1.75rem;
}

.certification-item {
    display: flex;
    gap: 1rem;
    padding: 1.75rem;
    background-color: var(--bg-primary);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.certification-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.certification-badge {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: bold;
}

.certification-details h4 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.certification-details p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Services Section - Pricing Card Style */
#services [style*="border-radius: 12px"]:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15) !important;
    border-color: #e2e8f0 !important;
}

/* Contact Section */
.section-contact {
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.contact-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 3rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--bg-primary);
    padding: 2.5rem 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 2px solid transparent;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.contact-card .contact-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.contact-card .contact-icon i {
    display: block;
}

.contact-card:hover .contact-icon {
    transform: scale(1.1);
}

/* Brand Colors for Social Icons */
.contact-icon-calendly {
    color: #006BFF;
}

.contact-icon-youtube {
    color: #FF0000;
}

.contact-icon-linkedin {
    color: #0A66C2;
}

.contact-icon-github {
    color: #181717;
}

.contact-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Footer */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    color: var(--text-light);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */

/* Tablet Landscape - 1024px and below */
@media (max-width: 1024px) {
    .container {
        max-width: 960px;
    }

    .hero-name {
        font-size: clamp(2rem, 5vw, 2.75rem);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .certification-list {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }
}

/* Tablet Portrait - 768px and below */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 6rem 0 4rem;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .hero-cta {
        flex-direction: column;
        gap: 0.75rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .project-card {
        padding: 1.5rem;
    }

    .filter-section {
        padding: 1rem;
    }

    .filter-tags {
        gap: 0.5rem;
    }

    .filter-tag {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }

    .contact-methods {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-card {
        padding: 2rem 1.5rem;
    }

    .certification-list {
        grid-template-columns: 1fr;
    }

    /* Services Section - Stack cards on tablet */
    #services [style*="grid-template-columns: repeat(4, 1fr)"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* How We Work Together - Fix grid on mobile */
    #services [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .project-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .project-duration {
        align-self: flex-start;
    }

    /* Services Section */
    .services-grid {
        grid-template-columns: 1fr !important;
    }

    .services-description {
        font-size: 1rem !important;
    }

    .service-card h3 {
        font-size: 1.5rem !important;
    }

    .work-together-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Small Mobile - 320px and below */
@media (max-width: 320px) {
    .container {
        padding: 0 0.75rem;
    }

    .hero {
        padding: 5rem 0 3rem;
    }

    .hero-name {
        font-size: 1.5rem;
    }

    .hero-subtitle-text,
    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.875rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .section {
        padding: 2rem 0;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
        min-height: 44px;
    }

    .nav-menu a {
        padding: 0.75rem 1rem;
        min-height: 44px;
    }

    .filter-tag {
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
        min-height: 44px;
    }

    .project-card {
        padding: 1rem;
    }

    .project-card h3 {
        font-size: 1.1rem;
    }

    .project-description {
        font-size: 0.9rem;
    }

    .tech-tag {
        font-size: 0.75rem;
        padding: 0.3rem 0.5rem;
    }

    .skill-category {
        padding: 1.25rem;
    }

    .skill-tag {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .contact-card {
        padding: 1.5rem 1rem;
    }

    .contact-card .contact-icon {
        font-size: 2rem;
    }

    .contact-card h3 {
        font-size: 1rem;
    }

    .contact-card p {
        font-size: 0.875rem;
    }

    .education-item {
        padding: 1.5rem;
    }

    .education-item h3 {
        font-size: 1.25rem;
    }

    .certification-item {
        padding: 1.25rem;
        flex-direction: column;
        text-align: center;
    }

    .certification-badge {
        margin: 0 auto 1rem;
    }

    .certification-details h4 {
        font-size: 1.1rem;
    }

    /* Services Section - Extra small */
    .service-card {
        padding: 1.5rem !important;
    }

    .service-card h3 {
        font-size: 1.25rem !important;
    }

    .service-icon {
        width: 48px !important;
        height: 48px !important;
        font-size: 1.25rem !important;
    }

    .work-together-section {
        padding-top: 2rem !important;
        margin-top: 3rem !important;
    }

    .work-together-section h3 {
        font-size: 1.25rem !important;
    }

    .work-together-item h4 {
        font-size: 1rem !important;
    }

    .work-together-item p {
        font-size: 0.875rem !important;
    }
}

/* Large Desktop - 1440px and above */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
        padding: 0 3rem;
    }

    .hero {
        padding: 8rem 0;
    }

    .hero-content {
        max-width: 1000px;
    }

    .hero-name {
        font-size: 3.5rem;
    }

    .hero-subtitle-text,
    .hero-subtitle {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1.25rem;
        max-width: 800px;
    }

    .hero-stats {
        gap: 5rem;
    }

    .stat-number {
        font-size: 3rem;
    }

    .section {
        padding: 6rem 0;
    }

    .section-title {
        font-size: 3rem;
        margin-bottom: 4rem;
    }

    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

    .project-card {
        padding: 2.5rem;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 2.5rem;
    }

    .contact-methods {
        grid-template-columns: repeat(4, 1fr);
        gap: 2.5rem;
    }

    .certification-list {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }

    .about-text {
        font-size: 1.25rem;
    }

    .contact-description {
        font-size: 1.375rem;
    }

    /* Services Section - Large Desktop */
    .services-grid {
        gap: 2rem;
    }

    .service-card {
        padding: 3rem;
    }
}

/* 4K / Ultra-wide - 2560px and above */
@media (min-width: 2560px) {
    html {
        font-size: 18px;
    }

    .container {
        max-width: 1800px;
        padding: 0 4rem;
    }

    .hero {
        padding: 10rem 0;
    }

    .hero-content {
        max-width: 1200px;
    }

    .hero-name {
        font-size: 4.5rem;
    }

    .hero-subtitle-text,
    .hero-subtitle {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1.5rem;
        max-width: 900px;
    }

    .hero-stats {
        gap: 6rem;
    }

    .stat-number {
        font-size: 4rem;
    }

    .section {
        padding: 8rem 0;
    }

    .section-title {
        font-size: 3.5rem;
        margin-bottom: 5rem;
    }

    .projects-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2.5rem;
    }

    .project-card {
        padding: 3rem;
    }

    .project-card h3 {
        font-size: 1.75rem;
    }

    .project-description {
        font-size: 1.25rem;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
        gap: 3rem;
    }

    .skill-category {
        padding: 3rem;
    }

    .contact-methods {
        gap: 3rem;
    }

    .contact-card {
        padding: 3.5rem 3rem;
    }

    .contact-card .contact-icon {
        font-size: 4rem;
    }

    .certification-list {
        gap: 2.5rem;
    }

    .certification-item {
        padding: 2.5rem;
    }
}

/* ========================================
   Services Section - CSS Classes
   (Replacing inline styles)
   ======================================== */

.services-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: var(--text-secondary);
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.7;
}

.services-description-sub {
    color: var(--text-light);
    font-size: clamp(0.875rem, 1.5vw, 1rem);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto 4rem;
}

.service-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
}

.service-card-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.service-card-accent.develop {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.service-card-accent.migrate {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.service-card-accent.upgrade {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.service-card-accent.support {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.service-card-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    font-weight: bold;
}

.service-icon.develop {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.service-icon.migrate {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.service-icon.upgrade {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.service-icon.support {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.service-card h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 700;
}

.service-card-subtitle {
    color: var(--text-light);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.service-card-body {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    text-align: center;
}

.service-card-list {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.service-card-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
}

.service-card-list .check {
    margin-right: 0.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.service-card-list .check.develop {
    color: #667eea;
}

.service-card-list .check.migrate {
    color: #f5576c;
}

.service-card-list .check.upgrade {
    color: #00f2fe;
}

.service-card-list .check.support {
    color: #38f9d7;
}

/* How We Work Together Section */
.work-together-section {
    max-width: 1000px;
    margin: 6rem auto 0;
    padding-top: 4rem;
    border-top: 1px solid var(--border-color);
}

.work-together-section h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.8rem);
    margin-bottom: 2.5rem;
    color: var(--text-primary);
    font-weight: 600;
    text-align: center;
}

.work-together-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem 3rem;
}

.work-together-item h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    font-weight: 600;
}

.work-together-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: clamp(0.875rem, 1.25vw, 1rem);
}

/* Services Section Responsive - Tablet */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Services Section Responsive - Mobile */
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .work-together-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .work-together-section {
        margin-top: 4rem;
        padding-top: 3rem;
    }
}

/* ========================================
   Touch Target Improvements
   (Ensuring 44x44px minimum for all interactive elements)
   ======================================== */

/* Ensure all links and buttons have minimum touch targets */
a, button, [role="button"], input[type="button"], input[type="submit"] {
    min-height: 44px;
}

/* Skill tags - ensure touch friendly */
.skill-tag {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

/* Tech tags - ensure touch friendly */
.tech-tag {
    min-height: 36px;
    display: inline-flex;
    align-items: center;
}

/* Contact cards - already large enough, but ensure consistent sizing */
.contact-card {
    min-height: 120px;
}

/* Social links / icon buttons */
.social-link, .icon-btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Logo touch target */
.logo {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

/* Certification items - clickable area */
.certification-item {
    min-height: 80px;
}

/* Highlight cards */
.highlight {
    min-height: 100px;
}

/* ========================================
   Ensure content doesn't overflow
   ======================================== */

/* Ensure images don't overflow */
img {
    max-width: 100%;
    height: auto;
}

/* Ensure text doesn't cause overflow */
.project-card h3,
.project-description,
.skill-tag,
.tech-tag {
    word-wrap: break-word;
    overflow-wrap: break-word;
}